7166139811 has 2 divisors, whose sum is σ = 7166139812. Its totient is φ = 7166139810.

The previous prime is 7166139809. The next prime is 7166139817. The reversal of 7166139811 is 1189316617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7166139811 - 2¹ = 7166139809 is a prime.

Together with 7166139809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7166139817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3583069905 + 3583069906.

It is an arithmetic number, because the mean of its divisors is an integer number (3583069906).

Almost surely, 2^7166139811 is an apocalyptic number.

7166139811 is a deficient number, since it is larger than the sum of its proper divisors (1).

7166139811 is an equidigital number, since it uses as much as digits as its factorization.

7166139811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 43.

The square root of 7166139811 is about 84653.0555325678. The cubic root of 7166139811 is about 1927.9470067267.

The spelling of 7166139811 in words is "seven billion, one hundred sixty-six million, one hundred thirty-nine thousand, eight hundred eleven".